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The Future Internet (FI) is expected to continue the success of today’s system and to provide improved features and usability in daily life to individuals and business. FI applications are expected to origin from areas such as health, energy grid, utilities and transportation, and are expected to form overlays. Tight economic constraints, however, require the Future Internet to consolidate applications-specific overlays efficiently into a homogeneous, if possible only a single, physical system. Thus, the system might be sustainable in technical and economical contexts. Network Virtualization (NV) and Network Federation (NF) are new concepts for horizontal and vertical integration. Hereby, NV achieves vertical integration (parallel operation) and NF aims at horizontal convergence of diverse technical/administrative domains. In this talk, we discuss how NV and NF can achieve sustainable integration. We use LTE mobile core networks and Transport Virtualization as examples. In addition, we discuss the key NV performance metrics for isolation (CPU and network capacity) and synchronization (consistency; temporal alignment of traffic flows), which the aims of achieving a better understanding for operating NV/NF-based networks. Additionally, we outline how NV and NF might be easier be able to reach long desired performance objectives, like reliability and end-to-end performance.
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